Description:

REnouveau stands for Reverse Engineer nouveau. It is an application
that runs small opengl tests and watches the changes in the video
card registers while the nvidia proprietary video drivers are in
use. This is used to do clean room reverse engineering (this is not
in violation with nvidia driver license).

Read this page if you want to submit a renouveau dump:
http://nouveau.freedesktop.org/wiki/REnouveauDumps